Year	Number
2004-01-01	17006
2005-01-01	30903
2006-01-01	33388
2007-01-01	36832
2008-01-01	39591
2009-01-01	45038
2010-01-01	48661
2011-01-01	49744
2012-01-01	70069
2013-01-01	118183
2014-01-01	117812
2015-01-01	124987
2016-01-01	128140